Asymmetric fission in the shell-correction method with the asymmetric two-center shell model

Quasidynamic propagation in diabatic landscapes for low energy nuclear fission

“…1 (left). Because of the narrowed (as compared with [7]) interval for the fragment deformation parameter e the saddle point height is higher (6.71 MeV) and the symmetric scission valley (where a trajectory is lain in) is slightly favoured at the critical point (d = 8.0 fm, = 1.5). Figure 1 (right) shows the "diabatic energy surface" V(q(t), t) with the diabatic trajectory obtained by the above procedure.…”

“…The model itself has been specially designed for the reproduction of the fragment mass asymmetry and has described the system at large elongations (beyond the saddle point) quite satisfactory [7]. In the framework of this parametrization the n = 3-dimensional configuration space {qi, i= 1 ..... 3} = (d', ~c, ~), is spanned on the following deformation parameters: d'=d/R o (where R o = ro.A ~/a stays for the equivalent nuclear radius) was the elongation coordinate -the dimensionless distance between the centers of the potential; ~c=An/A L -the asymmetry coordinate (An, A L being the Heavy and Light fragment mass numbers respectively) and ~ = an/b is the fragment deformation coordinate.…”